I've been reading a lot about habit change (actually a favorite topic for years now, despite limited progress!) and one things that I've seen & experimented with is to make the desired habit easier and easier until you can actually do it. So instead of 15 minutes, maybe it's 5 minutes, or even just 1. Or just opening youtube at all..

Another thing that's worked for me regarding meditation is learning a very simple breath-counting meditation (I usually just count to 3 over & over) that I can do anywhere, with no gadgets. But I also love audio guided meditation on my phone - the app I loved has changed to a rather-expensive paid one so I can't recommend it, I've downloaded a few new ones to try but no experience yet - but if you have a smartphone that's another idea.

In the end, I've found the best way for me to meditate semi-regularly is to have it be what I do before I fall asleep, lying in bed... I know from my own experience that a separate, ideally morning, meditation time is best, but the bedtime thing works best for me to develop the habit and it always makes me fall deeply asleep quickly.

Are there ways you could look at making your 15 minute daily meditation become a longer-term goal, and find smaller steps to implement now?